Spinning apparatus having a servicing position



SPINNING APPARATUS HAVING A snvzcrNG rosmoN Filed Jan. 21. '196s Mavy 12, 1970 v L, EURES ETAL 6 Sheets-Sheet 1 EEE bdo/.suv aule-x .mean/W ma/p04 Nm vener. INVENTOR May 12, 1970 L EURE-s ET Al. 3,511,045

SPINNING AJPARTUS HAVING A SERVICING POSITION' Filed Jan. 2l. 1969 I A 6 Sheets-sheet 2 lac/Mn 0MM TM: UE'IILC lNyENToR ATTORNEY May 12, 1970 l.. BURES ET AL 3,511,045

SPINNING APPARATUS `HAVING A sENvIcING POSITION Filed Jan. 21. 1969 'l e sheets-sheet :s

Am A V BUBES :PARMA u M0004 TM I Mfnc mvENToR SPINNING APPARATUS HAVING A SERVICING POSITION Filed Jan. 21, 1969 L. BURES ET AL May 12, 1970 6 Sheets-Sheet l INVENTOR Vzw/f. n A

ATTORNEY May 12, 1970 3,511,045

SPINNING APPARATUS HAV-ING A sERvIING POSITION L. BURES AL 6 Sheets-Sheet 5 Filed Jan. 2l. 1969 A0/4441 8ans:

muuu MWW* Tm: @elle mvENroR May l2, 1970 1 EURES ETAL Y SPINNING APPARATUS HAVING A sERvIcING POSITION Filed Jan. 21, 1969` s sheets-sheet e WAFA/fasc INVENTOR ATTORNEY United States Patent O U.S. Cl. 57-58.91 16 Claims ABSTRACT oF THE DISCLOSURE A row of spinning units is mounted along a frame and driven by common drive means. Each spinning unit includes first and second casings, and first and second spinning means in said first and second casings. The first casings are mounted on the second casings for movement with the first spinning means between a servicing position and an operative position, and the second casings are mounted on the frame for movement with the second spinning means between a servicing position and an operative position. The first and second casings can be simultaneously moved to the servicing positions in 'which the first and second spinning means are accessible for servicing, or to operative positions in which the first and second spinning means cooperate to spin yarn of a sliver.

BACKGROUND OF THE INVENTION The U.S. Pat. No. 3,375,649 discloses a servicing arrangement for spinning machines in which first and second casings housing first and second spinning means are both mounted on a frame for movement in an operative position in which the first and second spinning means cooperate, and a servicing position in which the first and second spinning means are separated and accessible for inspection and service.

Due to the fact that both casings and spinning units are mounted on the frame for movement between the operative and servicing positions, only a limited separation between the two spinning means can be obtained, and the accessibility of the spinning means for servicing and cleaning is only limited.

SUMMARY OF THE INVENTION It is one object of the invention to improve servicing arrangements for spinning machines in accordance with the prior art, and to provide a spinning apparatus whose spinning means can be made completely and conveniently accessible for servicing and cleaning.

Another object of the invention is to provide a spinning apparatus with two supports for two cooperating spinning means which permits complete separation of the spinning means obtained by simple structure.

Another object of the invention is to effect the simultaneous movement of the casings and spinning means to servicing positions by the action of a control member which can also be used for braking the spinning means in the servicing position.

Another object of the invention is to provide a spinning apparatus which can be placed in a first servicing position for cleaning and minor servicing operations, and in a second servicing position for major servicing operations.

With these objects in view, one embodiment of the invention comprises at least one spinning unit, and preferably a plurality of spinning units arranged in a row. Each spinning unit includes first and second supports, and first and second spinning means carried by the first and second supports. In accordance lwith the invention, the first support is mounted on the second support for movement with the first spinning means between a servicing position and an operative position, and the second support of eac-h spinning unit is mounted on a common frame for movement with the second spinning means between a servicing position and an operative position. The first and second spinning means cooperate in said operative positions to spin yarn of a sliver, and are spaced from each other and accessible for service in the servicing positions.

Control means are provided for moving the first support with the first spinning means to the servicing and operative positions, respectively, when the second support With the second spinning means is moved to the servicing and operative positions thereof.

The control means include a control lever mounted 011 the first support or casing for pivotal movement, and having a holding position abutting the frame for holding the first and second supports in the servicing positions. Locking means are provided for locking the first and second supports against the frame when the same are both in the operative position in which the first and second spinning means cooperate to spin a yarn.

In the preferred embodiment of the invention, the control lever has a brake surface engaging a pulley connected with rotary spinning chamber of the first spinning means for braking and stopping the first spinning means with the spinning chamber in the servicing position. However, when the supports are placed in the operative position, the pulley engages a drive belt extending along the frame and along all spinning units so that every spinning unit whose pulley engages the drive belt is driven.

While the control lever has a holding position for holding the first and second supports in the servicing positions, it can be turned to a position in which it passes through an opening in the frame so that it is possible to move the first and second supports with the first and second spinning means to a second servicing position in which the two supports are held by a stop on the second support engaging the frame. The first and second supports are advantageously provided with lugs through which a pivot pin .passes so that the first and second supports can angularly turn relative to each other between the operative positions and the servicing positions.

It is advantageous to provide the casing of the first support with an annular elastic sealing members surrounding the rotary spinning chamber of the first spinning means so that when the first and second supports and casings are in the operative positions, an annular fiange of the second support abuts the annular sealing member and deforms the same in a tight sealing engagement.

In the preferred embodiment of the invention, a presser member is adjustably and resiliently urged toward a feed roller so that a sliver supplied through a tapered condensor channel in the presser member is pressed against the feed roller and transported by the same to a combing roller which supplies fibers of the sliver to the rotary spinning chamber of the first spinning means.

In a modification of the invention, the rotary spinning chamber is secured to a shaft which is mounted on the first support casing for axial movement, and biased by a spring in axial direction so that the rotary spinning chomber assumes a desired position. In this manner the position of the spinning chamber relative to the second spinning means including the feed and combing rollers, can be adjusted.

The feed roller is preferably driven from a common drive means over a clutch 'which is disengaged when a sensing means senses a breakage of the spun and discharged yarn. The drive means may be a drive chain or a threaded spindle shaft meshing with a gear which is 3 part of the clutch controlled by the sensing means. The combing roller is connected for rotation with a pulley which engages a drive be;t common to all spinning units only in the operative position of the respective second support so that the combing roller is also not driven when the second support is in the servicing position.

Generally speaking, drive means, such as a drive belt, a drive chain, or a drive shaft extend along a row of spinning units `whose second supports are pivotally mounted on a common frame, and means are provided for connecting the drive means `with the first and second spinning means only in the operative positions of the first and second supports, and disconnecting the first and second spinning means from the drive means in the servicing positions so that the first and second spinning means do not run, and can be cleaned and serviced.

The novel features which are considered as characteristic for the invention are set `forth in particular in the appended claims. The invention itself, however, both as to its construction and its method of operation, together with additional objects and advantages thereof, will be best understood from the following description of specific embodiments when read in connection with the accompanying drawing.

BRIEF DESCRIPTION OF THE DRAWING FIG. 1 is a front elevation illustrating on a reduced scale a plurality of spinning units mounted on a frame, and drive means for the same;

FIG. 2 is a vertical cross sectional View of a spinning apparatus according to a first embodiment of the invention;

FIG. 3 is a vertical sectional view of a spinning apparatus according to a modified second embodiment of the invention;

FIG. 4 is a side view, partially in section, illustrating on a larger scale a spinning unit in a first servicing position;

FIG. 5 is a side view, partially in section, illustrating a spinning unit in the operative position;

FIG. 6 is a side view illustrating a spinning unit in a second servicing position;

FIG. 7 is a vertical sectional view illustrating a transmission and clutch Ifor driving a feeding roller from a common spindle in accordance with the embodiment of FIG. 2;

FIG. 8 is a vertical section view illustrating a transmission and clutch for driving a feeding roller from a drive chain in accordance with the embodiments of FIG. 3;

FIG. 9 is a fragmentary sectional view illustrating the supply of a sliver to the feeding and combing rollers; and

FIG. l0 is a fragmentary side view, partially in section, illustrating a modified support arrangement for a spinning chamber.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring first mainly to FIGS. 1 and 2, on a frame 1; which includes two vertical frame walls 13, two rows of spinning units S are mounted. Pairs of drive means are provided which are common to the two rows of spinning units, and drive the same. The drive means include a common drive belt 2 for driving first spinning means in a first support casing 15, a common driving belt 4 for driving combing rollers 5 of second spinning means in a support casing 16, and a common drive shaft 6 located in a tubular shaft 7 and connected to a feed roller in support casing 16 for driving the same, as will be described hereinafter. Drive belt 2 is driven over a pulley and belt transmission from an electric motor 9, and drive belt 4 is driven by an electric motor 10. Shaft 6 is driven by a further motor, not shown, the motors being mounted in the left head portion 11 of the frame. In the right head portion 12 of the frame, pulleys are mounted for guiding belts 2 and 4 in the form of endless loops. Shaft 6 is also supported in the head portion 12.

In the embodiment of FIGS. 3 and 8, shaft 6 is replaced by a common drive chain 14, as will be described ihereinafter.

As noted above, two rows of spinning units S are mounted on the frame walls 13 and include spinning means driven by common drive means. Since the two sides of the machine are identical, only one side including one row of spinning units, for example the left side of FIGS. 2 and 3 will be described.

Each spinning unit S includes a first support casing 15, and a second support casing 16. The first support casing 15 has a pair of lugs 40 located adjacent a pair of lugs 37 of the second support casing 16, and connected lwith the same by a pivot means 38 so that the first support casing 15 is mounted on the second support casing 16 for angular movement.

The second support casing 16 is mounted for angular movement on a tu'bular shaft 7, which is fixed by means of elastic sleeves 17, in lugs 18 of a bracket 19 secured to a 'bent portion of frame wall 13. In the position of FIG. 4, support casings 15 and 16 are in servicing positions angularly spaced from each other, and in the position of FIG. 5, support casings 15 and 16 abut each other in operative positions. In the position of FIG. 6, support casings 15 and 16 have been further turned until stopped by a stop projection 49 of the second support casing 16y which engages the bent over portion of frame wall 13.

As best seen in FIGS. 4 and 9, a feed roller 8, and a combing roller 5 are mounted for rotation in support casing 16. A presser member 64 is pivotally mounted on pin 67, and is formed with a tapered condenser channel 65 into which a sliver 66 is supplied from a supply reel 71 mounted on a pivotable holder 70. A spring 68 abuts support casing 16 and presser member 64 and urges the same to press the condensed sliver 66 against feed roller 8 which turns in clockwise direction about a pivot 21 and transport the sliver toward the combing roller 5 which is mounted on a pivot 24 and rotates in counterclockwise direction for combing out fibers from the transported sliver 66. An adjusting screw 69 engages presser member 64 to limit movement of the same under the action of spring `68. As best seen in FIG. 4, an outlet channel 28 extends from combing roller 5 through a circular boss 29 for supplying fibers to the rotary spinning chamber 3 which is mounted in a wide portion of casing 15. When support casings 15 and 16 are in operative positions illustrated in FIG. 5, boss 29 projects into the front opening of the spinning chamber 3, and the fibers deposited on an inner annular surface of the rotating spinning chamber 3 are spun into a yarn which is guided through the center opening 30 in boss 29 into the discharged passage 31 which has an outlet 33 in which a sensing means 34 is located which is held in a normal inoperative position as long as yarn is discharged through outlet 33, but causes stopping of feed roller 8 when sensing a yarn breakage. An elastic annular sealing member 56 is mounted within casing 15 surrounding the rotary spinning chamber 3, and in the closed operative position shown in FIG. 5, a circular flange 36 of support casing 16 abuts annular feeding member 56, deforming the same so that the interiors of support casings 15 and 16 are sealed.

In the embodiment of FIG. 4, spinning chamber 3 is secured to a shaft 41 which carries at its end a pulley 44, and is mounted for rotation in bearings 42 and 43 in a tubular casing portion of casing 15 whose diameter is smaller than the diameter of the casing portion in which the spinning chamber is located. Frame wall 13 has an opening 46 through which the tubular casing portion of ycasing 15 passes so that the larger casing portion of casing 15 is located on one side of frame wall 13, and pulley 44 on the other side. A control lever 45 is pivotally connected on the tubular portion of casing 15 and abuts in the position of FIG. 4 the other side of the frame wall 13 to hold casing 15 in the servicing position illustrated in FIG. 4. Gravity urges support casing 16 to turn in counterclockwise direction from the substantially vertical operative position shown in FIG. 5 to the slanted servicing position shown in FIG. 4 so that casing 15 is pulled to the servicing position shown in FIG. 4, the final servicing positions of casings and 16 being determined by control lever 45 abutting frame wall 13.

Control lever `45 has a brake surface 451 which is engaged by pulley 44 in the servicing position of casing 15 shown in FIG. 4 so that rotary spinning chamber 3 is braked to a stop in the servicing position.

The drive belt 2, which is common to all units on the respective side of the frame, is located above pulley 44, and when support casing 15 is turned to the substantially vertical operative position shown in FIG. 5, pulley 44 moves away from the brake surface 451, and engages the running drive belt 2 so that spinning chamber 3 is rotated to a spin yarn, not shown, which is discharged through channels 30, 31.

When the spinning unit is to be moved from the servicing position shown in FIG. 4 to the operative position shown in FIG. 5, support casing 16 is turned about tubular shaft 7 in clockwise direction while support casing 15 turns simultaneously in countercloekwise direction about pivot means 3S. In the operative position of FIG. 5, the wide portion of support casing 15 abuts frame wall 13, fange 36 of support casing 16 abuts the annular elastic sealing member 56, boss 29 projects into the opening of spinning chamber 3, and a fixed latch 48 on frame wall 13 is engaged by a locking means -47 secured to support casing 16 so that support casing 16 is locked to frame wall 13 in an operative position, and also holds support casing 15 in an operative position in which the first spinning means 3, 41 cooperate with the second spinning means 8, 5, 29, 30 to spin a yarn of the fibers of the sliver 66 supplied to the second spinning means.

Due to the action of gravity, control lever 45 assumes a horizontal position in the operative position of FIG. 5, while its brake surface 451 is spaced from pulley 54 of the first spinning means. When locking means 47 is unlocked, it is possible to turn support casings 15 and 16 together to the position of FIG. 6 since the end of the tubular portion of support casing 1-5, pulley 44, and control lever 45 in the raised position, pass through the opening 46 in frame wall 13. When support casing 16 is in the substantially horizontal position shown in FIG. 6, a stop portion 49 abuts the bent over lower end of frame wall 13 so that support casing 16 is held against further turning movement. In the position of FIG. 6, support casing 15 can be turned in clockwise direction away from support casing 16 so that the spinning means 3 in casing 15, and the spinning meas 29, 30 in casing 16 are exposed and accessible for service. It is evident that in the position of FIG. 6, support casing 15 can be turned an angle of almost 180 so that major servicing operations can be carried out.

The combing roller 5 is secured to a shaft 24 which is mounted in bearings 25, 26 in support casing 16, and carries a pulley 27. As best seen in FIG. 4, pulley 27 is spaced from the drive belt 4 in the servicing position of support casing 16 so that combing roller 5 is not driven, but when support casing 16 is turned to the operative position shown in FIG. 5, pulley 27 is in Contact with drive belt 4 so that the combing roller 5 is rotated. Drive belt 4 is common to the pulley 27 of all spinning units mounted in a row along the frame 1, 13.

The feeding roller 8 is secured to a shaft 21 which carries a movable armature forming the hub of a clutch half 51 which is urged by spring 55 abutting a flange of shaft 21 to move into coupling engagement With a second clutch half 52. When the winding 50 is energized, the clutch 51, 52 is disengaged against the action of the spring 55.

The second clutch half 51 has a gear rim which is driven by drive means extending along all units of the row.

In the embodiments of FIGS. l, 2, 4, 5, 6 and 7, the drive means is a drive shaft located in the hollow tubular shaft 7 on which support casing 16 is mounted for angular movement. The drive shaft 6 is a threaded spindle or helical screw meshing with the gear of clutch half 52 which passes through a slot in the tubular shaft 7, as best seen in FIG. 7. In the embodiment of FIGS. 3 and 8, a drive chain 14 extends along the spinning units of the row and is engaged by the respective gears of the clutch halfs 52. Support casing 16 has an arm ending in a bearing surrounding a stationary shaft 54 mounted on frame 1, 13, so that support casing 16 is mounted for angular movement between servicing and operative positions shown for the embodiment of FIG. 7 in FIGS. 4, 5 and 6.

The electromagnet 50 is controlled by the sensing element 34 in such a manner that in the event of breakage of yarn 32 discharged from outlet opening 33, best seen in FIG. 4, the electromagnet 50 is energized and disengages the clutch 51, 52 and disconnects shaft 21 of feeding roller 8 from the drive means 6 or 14. During normal operation, when sensing means 34 senses a spun yarn, the drive means 14 or 6 rotate clutch 51, 52 in engaged position together with shaft 21 and feeding roller 8 so that the sliver is fed as shown in FIG. 9. A siutable reduction gear may be interposed between clutch half 51 and feeding roller 8. In the embodiment of FIG. 4, the circular flange 36 engages the elastic annular feeding `member 56 when both support casings 15 and 16 are in the operative position. The rear of the spinning chamber 3 is provided with a labyrinth seal engaging corresponding grooves in the bottom wall of the wider portion of casing 15. The resilience of the elastic annular sealing member 56 permits slight relative adjustment of the support casings 15 and 16 when they are in the operative spinning position shown in FIG. 5 in which support casing 16 is locked by locking means 47, 48 to the frame wall 13, while support casing 15 is held by support casing 16 in abutment with frame wall 13.

In the modified construction shown in FIG. 10, a shaft 58 takes the place of shaft 41, and is secured to spinning chamber 3. Shaft 5S carries the pulley 44, but is mounted in the tubular portion of casing 15 for turning and axial movement. A holder 62 is secured in a groove 61 of shaft 58 and has an opening through which a screw 63 passes. A coil spring 59 surrounds screw 63 and abuts casing 15 and holder 62. Spring 59 urges support casing 15 to an operative position which is determined by the adjustable screw 63. The pressure of support casing 16 on support casing 15 in the operative position of the spinning unit, causes a slight displacement of support casing 15 so that spring 59 is compressed.

As mentioned above, beneath the spinning units, supply reels 71 are rotatably mounted on pivotable holder arms 70, and supply slivers 66 to the tapered condenser channels 65 of the second spinning means in support casing 16 of each spinning unit. The yarn 32 spun by the spinning ohamber 3 of the first spinning means in the first support casing 15, is delivered by a pair of rollers 72 and 73, all rollers 72 being mounted on a common shaft 74, and each rollers 73 being mounted on a pivoted arm for movement away from roller 72. The yarn 32 is finally wound by means of a traversing winding roller 76 on a take-up bobbin 75 which is detachably mounted on a forked arm 77 secured to the top of frame 1. Shaft 74 drives all traversing rollers 76 of the spinning units on the respective side of the frame, and roller 76 frictionally engages the wound-up package on bobbin 75 to rotate the latter.

During operation, support casings 15 and 16 are in the position of FIG. 5. Support casing 16 is locked lby locking means 47, 48 to the frame wall 13, and presses support casing 15 against the frame wall 13, while annular elastic feeding member 56 yields to the pressure of flange 36. Control lever 54 is in an inoperative position, and the tubular portion of support casing 15 passes through the opening 46 in frame wall 13. In this position, pulley 44 engages the drive belt 2 which extends along -all units of the respective row, two drive belts being provided on opposite sides of the frame, as shown in FIG. 2. Control levers 45 of operative spinning units are in positions in which the brake surface 451 thereof is spaced from pulley 44. Support casing 16 is turned with combing roller 5 to a position in which pulley 27 on shaft 24 of combing roller abuts drive 'belt 4 so that combing rollers 5 of all operative spinning units are rotated. The fibers supplied through passage 28 in the separator boss 29 to the interior of the rotary spinning chamber 3 are spun into a yarn, not shown, which is discharged through the central passage 30 in the separator boss 29. The axis of rotation of spinning chamber 3 coincides with the axis of the central passage 30 in the operative position of the spinning unit. Assuming that a yarn is sensed by sensing means 34, electromagnet 50 is deenergized, and spring 55 is effective to move clutch half 51 to a position engaging iclutch half 52 so that a driving motion can `be transmitted from shaft 6 and the gear on clutch half 52, in the embodiment of FIG. 7, and from drive chain 14 and the gear in the embodiment of FIG. 8 whereby shaft 21 and feeding roller 8 of operating units are driven to feed and transport the sliver 66, as shown in FIG. 9. However, if the yarn breaks, sensing means 34 is actuated to energize electromagnet 50 so that clutch 51, 52 is disengaged, and feeding roller 8 stops. The operator then starts the spinning unit again by threading a sliver into the condenser channel 65 in the operative position of the spinning unit.

If spinning chamber 3 or passage 30 have to be cleaned or serviced, the operator releases locking means 47 and turns support casing 16 in counterclockwise direction to the position of FIG. 4, the support casing 16 having a tendency to move to this servicing position. Control lever 45 is turned to the holding position shown in FIG. 4 abutting frame wall 13 so that support casing 15, which turns during turning of support casing 16, is stopped in the servicing position shown in FIG. 4. whereby the servicing position of support 16 is also determined. In the holding position of control lever 44 shown in FIG. 4, the brake surface 451 abuts pulley 54 so that the same and spinning chamber 3 are braked to a stop. The movement of support casing 16 to the releasing position of FIG. 4, has also moved pulley 27 of combing roller 5 away from the cornmon drive belt 4 so that the combing roller also stops. Since no yarn can be delivered through passage 31 in the open position of the spinning unit, sensing means 34 disengages cluutch 51, 52 yby energizing electromagnet 50, so that feeding roller 8 also stops. The two support casings, and the spinning means carried by the same can now be cleaned and serviced in the position of FIG. 4.

If repairs or major servicing operations have to be carried out, the operator places control lever 45 in the inoperative position shown in FIG. 5, and opens locking means 47 so that support casings 16 and 15 can be turned out of the operative position shown in FIG. 5 to the substantially horizontal position shown in FIG. 6, the opening 46 in frame wall 13 permitting the passage of the tubular portion of support casing and control lever 45. Counterclockwise movement of support casing 16 is stopped in the second servicing position shown in FIG. 6 by the stop 49 engaging the lower end of frame wall 13. Support casing 15 can now be turned in clockwise direction out of the position of FIG. 6 to a substantially horizontal position in which the spinning means in support casings 16 and 15 are completely accessible.

It will be understood that each of the elements described above, or two or more together, may also find a useful application in other types of spinning devices having servicing positions differing from the types described above.

While the invention has been illustrated and described as embodie-d in a row of spinning units, each of which is independently movable to a servicing position separated from a common drive and having the spinning means mounted thereon accessible for repair and service, it is not intended to be limited to the details shown, since various modifications and structural changes may be made without departing in any 'way from the spirit of the present invention.

What is claimed as new and desired to be protected by Letters Patent is set forth in the appended claims.

We claim:

1. Spinning apparatus comprising, in combination, a frame, and at least one spinning unit comprising first and second supports, and first and second spinning means carried by said first and second supports, respectively; first mounting means for mounting said first support on said second support for movement with said first spinning means and relative to said second support and said frame between a servicing position and an operative position; second mounting means for mounting said second support on said frame for movement with said second spinning means between a servicing position and an operative position, said first and second spinning means cooperating in said operative positions of said first and second support means to spin a yarn of a sliver and being spaced from each other and accessible for service in said servicing positions of said first and second supports; and control means mounted on said first support and having a holding position engaging said frame for holding said first and second supports in said servicing positions of the same when said second support is moved to said servicing position thereof and moves said first support to said servicing position thereof.

2. Spinning apparatus as claimed in claim 1 iwherein said spinning unit comprises locking means for locking said second support in said operative position to said frame; and wherein said first support in said operative position thereof is held by said second support in abutment with said frame.

3. Spinning apparatus as claimed in claim 1 wherein said control means include a control member mounted on said first support for pivotal movement, and being spaced from said frame when said first support is in said operative position and abutting said frame in said holding position when said first and second supports are in said servicing positions thereof whereby said first and second supports can not move beyond said servicing positions of the same.

4. Spinning apparatus as claimed in claim 3 wherein said first spinning means is mounted on said first support for rotation about an axis and includes a pulley; comprising a drive belt engaged by said pulley only in said operative position of said first support means; and wherein said control member has a brake surface engaged by said pulley in said holding position of said member in said servicing position of said first support so lthat said first spinning means is rotated in said operative position and stopped in said servicing position of said first support.

5. Spinning apparatus as claimed in claim 4 wherein said frame includes a frame `wall having an opening; wherein said first support means includes a first casing having a rst casing portion located on one side of said wall and housing said first spinning means, and a second casing portion projecting through said opening to the other side of said wall and having bearing means supporting said pulley on said other side of said wall; wherein said first mounting means includes first pivot means connecting said first casing portion with said second support; and wherein said control member is a control lever located on said other side of said |wall and being turnable on said second casing portion between said holding position abutting said wall and a normal position adjacent said second casing portion when said first support is in said operative position, said control lever in said normal position passing through said opening in said wall when said first and second supports are moved together beyond said servicing positions to second servicing positions; and wherein said second support includes stop means cooperating with said frame for holding said second support and thereby said first support in said second servicing positions.

6. Spinning apparatus as claimed in claim 1 wherein said first and second mounting means include first and second pivot means, respectively.

7. Spinning apparatus as claimed in claim 1 Iwherein said control means is movable to an inoperative position so that said first and second supports are turnable together beyond said servicing positions, which are first servicing positions, to second servicing positions in which said second support abuts said frame, and in which said first support is movable about said first mounting means away from said second support so that said first and second spinning means are accessible for servicing.

8. Spinning apparatus as claimed in claim 7 wherein said first and second supports are located in vertical planes in said operative positions, in differently slanted planes in said first servicing positions, and in substantially horizontal planes, respectively, in said second servicing posi- `tions.

9. Spinning apparatus as claimed in claim 1 wherein said first support includes a first casing and said second support includes a second casing for housing said first and second spinning means, respectively; wherein said first spinning means includes a rotary spinning chamber; wherein said first casing includes an elastic sealing ring surrounding said spinning chamber; and wherein said second casing has an annular fiange abutting and deforming said sealing ring in said operative positions of said first and second supports.

10. Spinning apparatus as claimed in claim 1 wherein said first support includes a first casing; wherein said first spinning means includes a spinning chamber mounted in said first casing for rotation, a shaft connected with said spinning chamber for rotation and mounted in said first casing for rotation and for axial movement with said spinning chamber, holding means secured to said shaft, and spring means between said holding means and said first casing for urging said spinning chamber resiliently to a working position cooperating with said second spinning means in said operative positions of said first and second support means.

11. Spinning apparatus as claimed in claim 1 wherein said first spinning means includes a rotary spinning chamber; and Iwherein said second spinning means includes a presser member pivotally mounted on said second support and formed with a tapering condenser channel for supplying a sliver, a feed roller for transporting said sliver, a combing roller for combing fibers from said sliver and for supplying the same to said rotary spinning chamber in said operative positions of said first and second support means, a spring urging said presser member to press the condensed sliver against said feeding roller, and an adjusting screw for limiting pivotal movement of said presser member under the action of said spring.

12. Spinning apparatus as claimed in claim 1 wherein said first support includes -a first casing, and said first spinning means includes a rotary spinning chamber mounted in said first casing, a pulley connected with said spinning chamber, a drive belt engaged by said pulley only in said operative position of said first support, and spaced from the same in said servicing position of said first support; wherein said second support includes a second casing, and said second spinning means is located in said second casing and includes a rotary feedig roller for feeding a sliver, a rotary combing roller for combing fibers from said sliver and for supplying the same to said spinning chamber, a passage for the spun yarn, and a sensing means in said passage; wherein said first mounting means include first pivot means connecting said first and second casings, and said second mounting means include second pivot means connecting said second casing with said frame; comprising first and Second drive means, transmission means connecting said first drive means with said feeding roller and including a clutch controlled by said sensing means to disconnect said feeding roller from said first drive means when no spun yarn is discharged through said passage; a drive belt, a pulley connected with said combing roller for rotation and engaging said drive belt in said operative pos-ition of said second casing and being spaced from the same in said servicing position of said second casing so that said second spinning means `is operated only in said operatve positon of said second casing.

13. Spinning apparatus as claimed in claim 12 wherein said drive means is a drive chain; and wherein said transmission includes a gear engaging said drive chain only in said operative position of said -second support.

14. Spinning apparatus as claimed in claim 12 wherein said drive means is a gear spindle; and wherein said transmission includes a gear meshing with said gear spindle only in said operative position of said second support.

15. Spinning apparatus as claimed in claim 14 wherein said second pivot means includes a hollow shaft having a slot; and wherein said gear spindle passes through said hollow shaft; and wherein said gear projects through said slot into meshing engagement with said spindle.

16. Spinning apparatus as claimed in claim 1 comprising a plurality of spinning units arranged in a row along said frame, each spinning unit including a second support mounted on said frame and supporting a second spinning means, and a first support mounted on the respective second support and supporting a second spinning means; drive means extending along said row and said frame; and means connecting said drive means with said first and second spinning means in said operative positions of said first and second supports, and disconnecting said first and second spinning means from said drive means in said servicing positions of said first and second supports.

References Cited UNITED STATES PATENTS 3,119,223 1/1964 Meimberg 57-58.95 XR 3,324,642 6/ 1967 Meimberg et al. 57-58.95 3,343,360 9/1967 Brown 57-.58.91 3,375,649 4/1968 Bures et al. 57-58.91

JOHN PETRAKES, Primary Examiner U.S. Cl. X.R. 57-58.95 

